63137324321 has 2 divisors, whose sum is σ = 63137324322. Its totient is φ = 63137324320.

The previous prime is 63137324309. The next prime is 63137324351. The reversal of 63137324321 is 12342373136.

63137324321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61224574096 + 1912750225 = 247436^2 + 43735^2 .

It is a cyclic number.

It is not a de Polignac number, because 63137324321 - 2²⁶ = 63070215457 is a prime.

It is a super-2 number, since 2×63137324321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63137324351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31568662160 + 31568662161.

It is an arithmetic number, because the mean of its divisors is an integer number (31568662161).

Almost surely, 2^63137324321 is an apocalyptic number.

It is an amenable number.

63137324321 is a deficient number, since it is larger than the sum of its proper divisors (1).

63137324321 is an equidigital number, since it uses as much as digits as its factorization.

63137324321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 35.

Adding to 63137324321 its reverse (12342373136), we get a palindrome (75479697457).

The spelling of 63137324321 in words is "sixty-three billion, one hundred thirty-seven million, three hundred twenty-four thousand, three hundred twenty-one".